Test Mode - Sony HCD-F50 Service Manual

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[MC Cold Reset]
•
The cold reset clears all data including preset data stored in
the RAM to initial conditions. Execute this mode when re-
turning the set to the customer.
Procedure:
1. Press three buttons FUNCTION , ENTER and CD PLUS 1
simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously,
and the set is reset.
[MC Hot Reset]
•
This mode resets the set with the preset data kept stored in the
memory. The hot reset mode functions same as if the power
cord is plugged in and out.
Procedure:
1. Press three buttons
CONTINUE/TUNING MODE simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously,
and the set is reset.
[MC Test Mode]
•
This mode can be used for operation check of Ampsection,
Tuner section and Deck section.
Procedure:
•
Press three buttons FUNTION , ENTER
and PROGRAM simultaneously.
In the MC Test Mode, blinking the fluorescent indicator tube
displays "Volume".
1. Test Mode in Amp Section
• Press GEQ MEMO button to GEG maximum and SUR
off.
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• Press EFFECT button to GEQ flat and SUR off.
• Press GEQ FILE button to GEQ minimum and SUR off.
• Rotarion VOLUME knob in "+" derection a little, the
fuorescent indicator tube displays "Volume MAX".
• Rotation VOLUME knob in "–" direction a little, the
fluorescent indicator tube displays "Volume MIN".
• Other function is a regular.
2. Test Mode in Tuner Section
• In the preset mode
• If after cold reset, preset value set a master control I.C.
• Receive tuning UP/DN sircs irrepective of during
testmode.
3. Test Mode in Deck Section
• If recording, function to Video and line mute off.
• Rewind after recording the tape stop to begin the recording
point.
• If press HI-SPEED DUBBING button during recoeding,
exactly the tape speed fast.
• If press HI-SPEED DUBIING button during playback,
the tape speed fast. One more press button, back to a
normal.
[Change-over of FUNCTION Name]
•
The FUNCTION name of external input terminal can be
changed over to VIDEO or MD.
Procedure:
1. Press POWER button to turn the set OFF.
2. Press POWER button together with GROOVE button, and
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the power is turned on, the display of fluorescent indicator
tube changes to "MD" or "VIDEO" instantaneously, and thus
the FUNCTION is changed over.
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SECTION 3

TEST MODE

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8
[Change-over of AM Tuner Step between 9kHz and 10kHz]
•
A step of AM channels can be changed over between 9kHz
and 10kHz.
Procedure:
1. Press POWER button to turn the set ON.
2. Select the function "TUNER", and press TUNER/BAND
button to select the BAND "AM".
3. Press POWER button to turn the set OFF.
4. Press ENTER and POWER buttons simultaneously, and the
display of fluorescent indicator tube changes to "AM 9k STEP"
or "AM 10k STEP", and thus the channel step is changed over.
[LED and Fluorescent Indicator Tube All Lit, Key Check
Mode]
Procedure:
and
1. Press three buttons FUNCTION ,
ENTER and SHUFFLE simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
Press CD PLUS 1 button, the fluorescent indicator tube dis-
plays MC version, GC version, model name and destination to
cycle.
3. Press CONTINUE button, and the key check mode is acti-
vated.
4. In the key check mode, the fluorescent indicator tube displays
"K 1 V0 J0". Each time a button is pressed, "K"value in-
creases. However, once a button is pressed, it is no longer taken
into account.
"J" value increases like 1, 2, 3 ... if rotating JOG knob in "+"
direction, or it decreases like 0, 9, 8 ... if rotating in "–" direc-
tion.
Q Q
"V" value increases like 1, 2, 3 ... if rotating VOLUME knob
3 6 7 1 3 1 5
in "+" direction, or it decreases like 0, 9, 8 ... if rotating in "–
" direction.
5. To exit from this mode, press three buttons in the same man-
ner a step 1, or disconnect the power cord.
[ADJ MODE]
Procedure:
1. Press the POWER button to turn the power ON.
2. Open the front cover, and press the PLUS ONE button.
3. Set the disc (YEDS-18 : 3-702-101-01) in the PLUS ONE slit.
4. Close the front cover, and chuck the disc.
5. Press the POWER button, and turn OFF the power.
6. Short pin 1 and pin 3 of CN404 on the MAIN board.
7. Press the POWER button and turn ON the power.
The ADJ mode is set with the above.
Differences with normal mode
•
No high speed search is performed during access
•
Ignored even if GFS becomes L
•
Ignored even if Q data cannot be read
•
Spindle servo gain is set to 12 cm mode (Even with 8 cm disc)
The following special functions will work when certain functions
are pressed in this mode.
Special functions in ADJ mode
(The ( ) buttons function only with the general purpose remote.)
Button
(3)
co
(8)
CHECK
.
CLEAR
– 33 –
9 4 2 8
0 5 8 2 9 9 4 2 8
m Function
Tracking servo, sled servo OFF
Tracking servo, sled servo ON
S shape observation mode
Eccentric measurement mode
Ver. 1.1
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